Choroidal and retinal thickness values and vascular indices (mean±SD)
| Controls (n=37) | No DR (n=31) | NPDR (n=41) | PDR (n=27) | |
| Choriocapillaris | ||||
| Choroid thickness | 310±16 | 298±18 | 308±26 | 317±50 |
| Wholeimage CPD | 69.6±4.6 | 68.5±5.2 | 63.8±8.2 | 64.7±8.2 |
| Foveal CPD | 67.7±9.1 | 66.8±8.9 | 63.8±10.8 | 65.5±6.8 |
| Parafoveal CPD | 69.3±4.4 | 68.7±5.3 | 63.1±9.0 | 63.6±8.8 |
| Retina | ||||
| CST | 261±25 | 248±28 | 271±47 | 268±45 |
| Whole image CPD | 50.6±5.3 | 50.1±6.9 | 50.5±4.5 | 45.7±5.6 |
| Foveal CPD | 29.7±7.5 | 26.4±7.0 | 28.6±7.6 | 23.6±7.7 |
| Parafoveal CPD | 53.6±5.6 | 52.5±7.3 | 53.0±4.8 | 47.5±5.6 |
| Foveal avascular zone | ||||
| Area | 0.275±0.1 | 0.313±0.1 | 0.305±0.2 | 0.415±0.2 |
| Perimeter | 2.08±0.5 | 2.31±0.4 | 2.26±0.7 | 2.87±1.0 |
CPD, capillary perfusion density; CST, central subfield thickness; DR, diabetic retinopathy; NPDR, non-proliferative diabetic retinopathy; PDR, proliferative diabetic retinopathy.